Class: Commands::AddInstance
- Inherits:
-
Object
- Object
- Commands::AddInstance
- Defined in:
- lib/commands/add_instance.rb
Instance Method Summary collapse
-
#make_amazon_config_command(akey, skey) ⇒ Object
build the command to create the amazon.json file containing the keys passed.
-
#options ⇒ Object
holds the options that were passed you can set any initial defaults here.
- #register(opts, global_options) ⇒ Object
-
#required_options ⇒ Object
required options.
- #run(global_options, amazon) ⇒ Object
Instance Method Details
#make_amazon_config_command(akey, skey) ⇒ Object
build the command to create the amazon.json file containing the keys passed
204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 |
# File 'lib/commands/add_instance.rb', line 204 def make_amazon_config_command(akey, skey) file = "/var/chef/test.json" cmd = "'sudo rm -f #{file} ( cat <<'EOP' { \"aws_access_key_id\": \"#{akey}\", \"aws_secret_access_key\": \"#{skey}\" } EOP ) > #{file} sudo chown root:root #{file} sudo chmod 0644 #{file}'" end |
#options ⇒ Object
holds the options that were passed you can set any initial defaults here
6 7 8 9 10 11 12 |
# File 'lib/commands/add_instance.rb', line 6 def @options ||= { :instance_size => "c1.medium", :start_app => false, :availability_zone => "us-east-1c" # this is where our reserved instance currently are } end |
#register(opts, global_options) ⇒ Object
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 |
# File 'lib/commands/add_instance.rb', line 24 def register(opts, ) opts. = "Usage: add [options]" opts.description = "Add a server instance" opts.on('-s', "--size instance_size", ["t1.micro", "m1.small", "c1.medium"], "The amazon instance size - currently we limit to 32 bit instances.") do |v| [:instance_size] = v end opts.on('-z', "--zone availability_zone", MetaOptions.availability_zones, "The amazon availability zone - currently we only support the east coast.") do |v| [:availability_zone] = v end opts.on('-r', "--role role", MetaOptions.roles, "Required - Role server will play.") do |v| [:role] = v end opts.on("--start_app", "Set if you want to deploy and start the app after instance is ready.") do |v| [:start_app] = v end opts.on('-e', "--extra extra", MetaOptions.roles, "Optional extra data associated with this instance.") do |v| [:extra] = v end opts.on('-g', "--group deploy_group", "Required - The deploy group we are in. A deploy group is a set of servers that are required to run the infrastructure for a server.") do |v| [:group] = v end opts.on('-p', "--print path", "The directory into which we output the data as a file per host.") do |v| [:result_path] = v end opts.on("--config_akey AmazonAccessKey", "Required - Amazon access key to store on server.") do |v| [:config_access_key] = v end opts.on("--config_skey AmazonSecretKey", "Required - Amazon secret key to store on server.") do |v| [:config_secret_key] = v end end |
#required_options ⇒ Object
required options
15 16 17 18 19 20 21 22 |
# File 'lib/commands/add_instance.rb', line 15 def @required_options ||= Set.new [ :role, :group, :config_access_key, :config_secret_key, ] end |
#run(global_options, amazon) ⇒ Object
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 |
# File 'lib/commands/add_instance.rb', line 66 def run(, amazon) ec2 = amazon.ec2 utils = ZZSharedLib::Utils.new(amazon) user_json = JSON.pretty_generate() # deploy group group_name = [:group] role = [:role] extra = [:extra] start_app = [:start_app] # first see if already exists deploy_group = amazon.find_deploy_group(group_name) recipes_deploy_tag = deploy_group.recipes_deploy_tag group_config = deploy_group.config availability_zone = [:availability_zone] || group_config[:availability_zone] # the security key security_key = group_config[:amazon_security_key] # the security group security_group = group_config[:amazon_security_group] # find ones matching the role match = amazon.find_by_role(group_name, role) # stop if we have a case where we only allow one of a particular kind case role.to_sym when :app_master, :db, :solo if match.length > 0 raise "Argument error: You already have a duplicate role of #{role}. The existing instance is #{match[0]}." end end # now find the proper AMI image to use baseline_image = group_config[:amazon_image] # first see if we have a specific image for this role role_image = "#{baseline_image}_#{role}" match_image = amazon.find_typed_resource("image", "Name", role_image) if match_image.length > 1 raise "You must have only one AMI Image for #{role_image}. Found: #{match_image.length}" end if match_image.length != 1 # didn't have a specific role image so get the generic one match_image = amazon.find_typed_resource("image", "Name", baseline_image) if match_image.length != 1 raise "Need to have exactly one AMI Image for #{baseline_image}. Found: #{match_image.length}" end end instances = ec2.run_instances(match_image[0], 1, 1, [security_group], security_key, user_json, nil, [:instance_size], nil, nil, availability_zone) inst_id = instances[0][:aws_instance_id] puts "Waiting for instance #{inst_id} to boot" aws_state = "" instance = nil waits = 0 while aws_state != "running" do print "." STDOUT.flush sleep(1) waits += 1 # this silly bit of logic is needed because sometimes Amazons API does not know # about the newly created instance for a brief period so don't ask till we give it # a chance to learn about it if waits >= 10 instance = ec2.describe_instances(inst_id)[0] aws_state = instance[:aws_state] end end puts puts "Tagging instance." ec2.(inst_id, {"Name" => "#{group_name}_#{role}_#{inst_id}", :group => group_name, :role => role, :extra => extra, :state => 'booting', :deploy_app => ZZSharedLib::Utils::NEVER, :deploy_chef => ZZSharedLib::Utils::NEVER }) dns_name = instance[:dns_name] ssh_cmd = "ssh -t -i ~/.ssh/#{group_config[:amazon_security_key]}.pem ec2-user@#{dns_name}" puts ssh_cmd test_cmd = 'echo "connected"' test_cmd = "#{ssh_cmd} '#{test_cmd}'" tries = 0 while true do puts "testing ssh connection" result = ZZSharedLib::CL.do_cmd_result test_cmd break if result == 0 sleep(6) tries += 1 if tries >= 40 # todo decide if we should terminate this instance ec2.(inst_id, {:state => 'failed_boot' }) raise "Not able to establish ssh connection, make sure the security group has the ssh port open." end end # if we get here we should have verified that the machine is ready and we can ssh into it, lets # do the initial upload step for the chef recipes by fetching the proper tag on the remote machine ec2.(inst_id, {:state => 'ready' }) remote_cmd = "#{ssh_cmd} #{make_amazon_config_command([:config_access_key], [:config_secret_key])}" result = ZZSharedLib::CL.do_cmd_result remote_cmd if result != 0 raise "The instance was created but we were unable to upload amazon keys." end git_cmd = ChefUpload.get_upload_command(recipes_deploy_tag) remote_cmd = "#{ssh_cmd} \"#{git_cmd}\"" result = ZZSharedLib::CL.do_cmd_result remote_cmd if result != 0 raise "The instance was created but we were unable to upload the chef recipes.\nYou should try again by using 'chef_upload' and make sure you have a valid git tag." end # set up our instance id # first get all instances in our group which should include us amazon. # force a refresh of the cached tags all_instances = amazon.find_and_sort_named_instances(group_name) just_our_instance = all_instances.reject { |inst| inst[:resource_id] != inst_id } # deploy the chef config puts "Updating chef configuration for new instance." BuildDeployConfig.do_config_deploy(utils, amazon, just_our_instance, group_name, deploy_group, [:result_path]) # optionally deploy and start app # note in this case we redeploy the whole group since # there are dependencies between the instances if start_app puts "Now deploying all app instances since the configuration changed." BuildDeployConfig.do_app_deploy(utils, amazon, all_instances, group_name, deploy_group, '', false, false, [:result_path]) end end |